Spinning machine



Dec. 13, 1949 c. H. HARRIGAN ETAL. 2,490,803

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M a W naawz i my 5 v J mu ww a Mr $7 Patented Dec. 13, 1949 2,490,803 srnmmo MACHINE 0. Herbert Harrigan, Ridgewood, William W. Wetzold, Rochelle Park, Gilbert F. Norcross, West Caldwell, and John C. Van Riper, Radto John H. Hays, Morrkburn, N. 1., assignors town, N. J.

Application October 21, 1946, Serial No. 704,695

8 Claims. 1

This invention relates to spinning machines, and more particularly to spinning frames of the ring type.

In one conventional type of ring spinning machine, twistless roving passes through a drafting section composed of a number of pairs of rollers rotating at progressively increasing speeds, and then through a thread guide located above the bobbin to a traveler movable about a ring encircling the base of the bobbin. The movement of the traveler spins the roving into a thread and winds the spun thread upon the bobbin. The high speed rotative movement of the traveler causes a. ballooning of the thread between the thread guide and the traveler, and a false ballooning between the thread guide and draft rolls.

The conventional machine employs a traversing ring which has an up and down movement, the constant length downward strokes being shorter, by a small increment, than the upward strokes, resulting in a progressively upward movement of the ring, and a gradual building of the bobbin. As the ring moves upward, the balloon becomes shorter and centrifugal force causes increased tension in the thread and consequent increased yarn breakages. Because of this, the speed of the machine must be decreased to offset the increase in tension. It has been found that there is an optimum distance between the draft shaft and ring rail at which the spinning and winding of the yarn is best.

Several attempts have been made to maintain the optimum distance over as long a period of the dofi as practical. In order to obtain this advantage, several manufacturers of ring spinning machines employ mechanism to lower the bobbin spindles in combination with either a traversing or stationary ring rail. In doing this, it is necessary also to lower the spindle driving mechanisms which usually are running at high rotative speeds. This method tends to encourage vibration due to the non-rigid mounting of the high speed rotating parts, which results in unsatisfactory conditions.

As a solution to this problem, the present invention proposes to maintain the spindles and their driving mechanisms in a fixed location in order to secure the advantage of rigid mounting, and to raise the drafting section, which comprises a number of slow speed rotating shafts,

to maintain the optimum distance between draft shaft and ring rail.

A more specific object of the invention is to provide means to control the upward movement of the draft section, which means is operated by,

2 and in synchronism with, the ring rail traversing mechanism.

Another object of the invention is to provide novel drive mechanism for the draft section which provides constant and positive drive for the draft rolls throughout the entire rising movement of the draft section.

A further object is to provide means to raise the thread guide and ballon arrester in synchronism with the progressive upward movement of the ring rail to the end that all critical relative distances between ring rail, thread guide, balloon arrester and draft shaft will be maintained.

On conventional machines the drafting section consists of five shafts. The maximum draft usually obtained is approximately ten to one in order to produce uniform yarn of high quality. Higher drafts can be obtained only at a sacrifice of quality due to the fact that the roving is composed of fibers of various lengths. Some machines have been converted into high-draft machines by the use of small belts running over the three shafts immediately above the draftshaft. Since these belts require considerable maintenance as well as the use of tension mechanisms and guides, it is felt that this method is not a practical solution to high-draft problems, even though these belts control short fibers with a fair degree of eiliciency.

It is an object of this invention to provide a drafting section having more than the conventional five draft shafts to provide better fiber control, whereby higher drafts are possible without sacrifice of quality, and belts, tension devices, g'uzcllles and other appurtenances are dispensed wi Another object of the invention is to provide an improved under-cleaner for the draft-roll.

A further object of the invention is to provide improved means for preventing entanglement, or marriage, of two adjacent threads if one thread breaks.

Another object of the invention is to provide means for reversing the direction of rotation of the spindles without reversing the draft section or other parts of the machine, and without the necessity of adding or replacing gears when the reversal is to be made.

Other objects of the invention will become apparent from the following detailed description of a preferred practical embodiment of the invention, taken in conjunction with the drawings which accompany and form a part of this specifioc cation.

, 3 In the drawings: Figure 1 is a partial side elevation of a spinning machine embodying the principles of the present invention, parts being broken away;

Figure 2 is a vertical, transverse section through the spinning machine shown in Figure Figure 3 is an enlarged view of a portion of the machine as shown in Figure 2, one of the draft section lifting Jacks being shown in section:

Figure 4 is an enlarged partial side view of the machine, parts being broken away to show the bobbin building mechanism and cooperating parts of the invention;

Figure 5 is a skeleton view of the frame, draft rail, jack and jack motor control mechanism;

Figure 6 is a view of the end frame of the machine, showing the movable draft section drive gear train, the position of the gears when the draft section is in lowered position being shown in full lines, the upper position being shown dotted;

Figure 7 is a vertical, longitudinal section through the drive and of the machine;

Figure 8 is a horizontal section through the drive transmission showing the spindle drive and power take-off for the other moving parts of the machine;

Figure 9 is a section taken on the line 9-9 of Figure 4, showing the sprocket drive from the motor to the draft section lifting jacks and the quadrant controlling the position of the balloon arresters;

Figure 10 is a face view of the right hand first intermediate frame member shown in Figure 1, showing the thread guide control mechanism;

Figure 11 is a horizontal section through the first intermediate frame shown in Figure 10, the thread guide control mechanism being in plan;

Figure 12 is a vertical section taken on the line l2-i 2 of Figure 5, the draft section lifting mechanism limit switches being shown in elevation;

Figure 13 is a diagrammatic layout of the electrical circuit for the draft section lifting mechanism motor;

Figure 14 is a vertical section taken on the line 14- of Figure 7, showing the six-roll draft section drive gearing;

Figure 15 is a front view of one section of the draft mechanism showing the six-roll draft arrangement and the anti-marriage roller;

Figure 16 is a horizontal section through one of the lifting jacks, taken on the line l6i6 of Figure 3;

Figure 17 is a vertical section through the draft shaft and associated rollers, showing in section the draft shaft under-cleaner;

Figure 18 is a section taken on the line i8- ll of Figure 17; and

Figure 19 is a horizontal section through the bobbin builder showing the gear arrangement.

Referring to the drawings in detail, the invention is shown applied to a generally conventional spinning machine. These machines are usually of considerable length, and the vertical frames I carry longitudinal rails la which support rows of bobbin spindles along each side, each row consisting of a number of spindles 2. A draft section 3 is positioned above each spindle row, and roving cops 4 are held above the machine in the usual manner upon brackets 5. Rovings from cops 4 are threaded over guide rods 6, through draft section 3, and thread guides l to the spindles.

Each spindle 2 is encircled by a ring I upon which a traveler 9 is freely rotatable. The rings 8 are mounted upon a ring rail It, the ring rail being of sectional formation with several rings upon each section, and the sections being connected by ring rail plate holders II.

In the building of the bobbin, the roving, after passing through thread guide I, is threaded through traveler 9 and then attached to the usual paper tube 12 which is placed upon the spindle. The spindle is rotated very rapidly by means of a belt i3 from the spindle drive drum II. The rotation of the spindle is much more rapid than the passage of the roving through the draft section. The high rotative motion of the spindle causes the traveler I to revolve around ring I imparting a twist to the roving between the traveler and the draft shaft, spinning the yarn. Yarn is wound upon the spindle only so fast as it is fed by the draft section. Ring I is of the traversing type, having a vertical reciprocatory movement, with the upward stroke being slightly longer than the downward stroke to cause a progressively upward travel of the ring during the building of the bobbin.

As mentioned above, the rapid movement of the traveler about the ring causes the thread to balloon outward, as shown in Figure 3, causing a tensioning stress in the thread which tends to cause yarn breakage. As the distance between ring and draft section becomes less, the balloon becomes shorter and the tension increases.

To maintain the advantage of optimum distance between the draft section and the ring, the present invention provides means for raising the draft section in substantially equal increments with the movement of the ring rail from a predetermined point in the bobbin building to the substantial completion thereof.

To accomplish this, the draft section which is composed of a number of rolls extending the length of the machine and supported upon a draft rail i5, is mounted for vertical movement by means of pairs of pivoted parallel links it, each link having one end pivotally connected to the machine frame I and the other end pivotally secured to the draft section frame. The links, mounted as described, form with the frame and draft section a par llelogram to maintain perfect vertical alignment of the draft section throughout its entire range of vertical movement. A series of screw jacks ll, having their lower ends pivotally connected to the machine frame, as at l8, and their upper ends pivotally connected to the draft rail, as at l9, serve to raise the draft section. The movement of the screw lacks is initiated and controlled by the ring rail traversing mechanism in a manner and by means to be described.

A well known type of ring rail traversing mechanism is shown on the drawings, in which the ring rail plate holders Ii are secured to rods 2| which are wertically reciprocable. Each of the rods 20 has fixed to its lower end, as at 2!, a chain 22, the chains passing upwardly and over pulleys 23 for attachment to a reciprocatory horizontal bar 24. Another chain 25 is attached to bar 24 and passes around a pulley 28 and downward to a chain drum 2! on a bobbin builder 28. Drum 2'! is mounted upon a shaft 29 extending outward near one end of the bobbin builder. The opposite end of the bobbin builder is pivotally attached to the machine frame at 30. Mounted upon the top of the bobbin builder casing is a cam follower 3| to ride upon the surface of cam 32 fixed .motor 43.

to shaft 33 connected to the drive mechanism of the machine. As cam 32 rotates, bobbin builder 28 will be caused to oscillate about its pivot 30, drawing chain 25 downward and causing bar 24 to move to the right, as viewed in Figures 4 and 5. The movement of .bar 24 will move chains 22 lifting ring rail l0. As cam 32 continues to rotate bringing its low spot adjacent follower 3|, the weight of the ring rail will cause the various parts to assume their original positions. Thus, the rotation of the cam causes a vertical traversing movement by the ring rail.

To provide a slightly longer upward than downward stroke of the ring rail, to effect a progressively upward movement of the ring rail as the bobbin is built, chain drum 2'! of the bobbin builder is rotated in fractional amounts on each down stroke of the bobbin builder, winding up a portion of chain 25 and causing a gradual movement of bar 24 to the right and consequent move ment of the ring rail upwardly, This is accomplished by means of a ratchet 34, mounted on shaft 35. journaled in the bobbin builder casing. Inside the casing shaft 35 carries a worm gear 36 which meshes with a worm wheel 31 carried by the chain drum shaft 29 so that movement of ratchet 34 imparts rotation to drum 21. Ratchet 34 is rotated by means of a dog 38, pivotally carried by a bracket 39, which is journaled to the end of shaft 35. The outer end of bracket 39 is suspended by means of a chain 40 from the frame rail Ia. As the bobbin builder rocks downwardly under the influence of cam 32, bracket 39 will swing about shaft 35, and dog 38 will rotate the ratchet wheel a predetermined number of teeth winding up chain 25. A weighted holding dog 4|, pivotally mounted upon the bobbin builder casing, holds the ratchet in adjusted position preventing reverse rotation.

Screw jacks H which lift the draft section are operated from a shaft 42 which extends substan- -motor 43, which is controlled by movement of horizontal bar 24. Each of the jacks l1 comprises a lower casing 44 housing a worm wheel 45 in mesh with a worm 46 on shaft 42. Shaft 42 passes through the jack casing and is journaled therein. Worm wheel 45 is keyed upon the lower end of a. screw-threaded shaft 41 which extends vertically above the lower housing 44, and is encased in a tubular housing 48 secured to the lower casing 44. Telescopically mounted within the tubular housin 48, is "a cylindrical member 49 having a threaded portion 50 to cooperate with the threaded shaft 41 to cause the cylindrical member 43 to rise when shaft 42 is rotated by The motor is controlled by means of a draft section control rod 5|, horizontally positioned just below horizontal bar 24 near the drive end of the machine. As previously explained, horizontal bar 24 has a longitudinal oscillating motion with the bar gradually progressing to the right as viewed in Figures 4 and 5. On the rail 24 are two adjustable dogs 52 and 53, which cooperate respectively with a normally open micro-switch 54 and a normally closed micro-switch 55 mounted at spaced points on the control rod 5|. Micro-switches 54 and 55 are included in a control circuit for motor 43.

The respective positions of the dogs 52 and 53 and micro-switches 54 and 55 are such that bar 24 will move progressively to the right until the bobbin is built a predetermined amount before dog 52 will first strike switch 54. The more general oscillation of bar 24 will then cau-e dog 52 to close micro-switch 54 to start motor 43, in a. manner to be described, the motor operating screw jacks H and lifting the draft section. A chain 56 is attached to the draft section and extends downwardly and around pulley 51 to have its opposite end attached to control rod 5| to move the control rod to the right as the draft section rises. The draft section rises in increments substantially equal to the lift of the ring rail, but each movement of the draft section is accomplished much more rapidly than the similar movement of the ring rail. For this reason, when micro-switch 54 has been actuated to start motor 43, control rod 5| will travel to the right ata faster rate than horizontal bar 24 causing microswitch 55 to overtake dog 53 and be actuated thereby, opening the control circuit and stopping the motor.

The control circuit comprises two relays for starting, stopping and reversing motor. 43 and various switches for closing and opening circuits to the relays. As shown in Figure 13, the circuit begins with wire 58 from a source of power, through manually controllable safety switch 59, wire 60, relay coil 6|, wire 62, micro-switch 54, wire 63, micro-switch 55, wire 64, a limit switch 65 for controlling the maximum upward movement of the draft section, and wire 66 to the other side of the power source. When micro-switch 54 is closed by movement of the horizontal bar 24 causing dog 52 to strike the switch, the circuit is closed through relay coil 6 Idrawing up its armature and closing contacts 61, 68, 69, to complete a circuit to motor 43. The energization of relay 6| also. closes contacts 10 which creates a bridge across switch 54 and sets up a holding circuit to maintain current through relay coil 6| after the momentary closing pressure upon switch 54 has been released. As control rogl 5| moves, micro-switch 55 catches up with, and passes under dog 53 which actuates the switch and breaks the circuit through relay coil 6|, thus causing a break in the motor circuit. Subsequent movement of the dogs 52 and 53 over micro-switch 55 has no effect on the circuit until after switch 54 is again actuated.

As the draft section reaches its upward limit of travel, an arm attached to draft rail |5 strikes, and actuates limit-switch 65 which is secured to the machine frame, to open the control circuit to prevent further upward movement of the draft section. The limit switch 65 is so positioned that it will be actuated simultaneously with the completion of the winding of the bobbin, or at any other predetermined point therein.

To return the draft section to its starting position, a second circuit is employed. This circuit is in parallel relation to the one previously described, and comprises wire 56, switch 53, wire 60, a relay coil 12, wire 13, a normally open manually operable switch 14, wire 15, a normally closed down limit switch I6, wires 11 and 66 to the other side of the line. Closing switch 14 energizes relay coil 12, drawing up the relay armature and closing contacts 19, 86, 8| closing the motor circuit. It will be seen from Figure 13 that the current flow to the motor is reversed so that when this circuit is energized the motor will run in reverse to lower the jacks I! to lower the draft section, Simultaneously with the closing of motor contacts 19, 80, 8|, contacts 18 will be closed bridging the switch 14 to set up a holding circuit to keep relay coil 12 energized after switch It has opened, when the draft section reaches its lowest position, the arm II on the draft rail will strike the down limit switch It to break the circuit through relay coil I2, thus breaking the motor circuit. As the draft section begins its downward travel, arm II leaves the up limit switch it, restoring the original circuit for operation when dog I2 on bar 24 again strikes switch it.

Although the lifting of the draft section maintains the optimum balloon and greatly reduces yarn breakage, it has been found that more perfect results are obtained by having thread guides I and balloon arresters 82 movable also to secure proper positioning of ring rail, balloon arresters, thread guides and draft section at all times. In the present embodiment of the invention the thread guides remain stationary throughout approximately the first half of the bobbin building, and then either oscillate in unison with the ring rail moving progressively upward, or are moved upward manually ahead of the lift of the ring rail. The two movements of the thread guides are under the control of the operator and either may be used at his discretion. The balloon arresters move with the ring rail throughout the entire building of the bobbin.

The balloon arresters, as shown. comprise fingers I! mounted upon a horizontal shaft 24 which extends the length of the machine. The fingers are spaced apart upon the shaft and positioned to project outwardlybetween each two spindles. Shaft 84 is journaled in brackets 85 which are secured to vertically reciprocating rods 20 supporting the ring rail. Obviously. as the ring rail reciprocates and progressively rises, the balloon arresters will also reciprocate and progressively rise maintaining a fixed distance .between the ring rail and balloon arresters. The mechanism is designed to provide adjustment for the balloon arresters and to permit them to be turned completely out of the way during dofling. To accomplish this, the shaft 84 is provided with an arm 86 having a spring pressed detent 81 in its outer end to selectively engage any of a series of holes 88 in 'a quadrant 89 carried by the ring rail. This provides an angular adjustment for fingers 83 to secure proper relative distances between ring rail and balloon arresters. For doillng, the control arm 8 may be rotated downwardly until detent 21 engages opening at, which places fingers II in substantially vertical position, completely away from the bobbins.

Thread guides I are of the well known "pigtail" type, and are mounted upon a rod OI. Rod OI is supported in brackets 92 slidably mounted upon guide posts 93. which posts also serve to guide the ring rail. Counterbalanced arms 84, fixed to a shaft 95, are provided with slots 84' near their outer ends to engage pins 82' on brackets 92 to pivotally connect the arms to brackets 82 to movably support the thread guidm. The end of shaft it is provided with a short arm I, fixed thereto to rotate therewith. The end of arm 96 is bent. as at ill, to overlie an operating handle st, loosely mounted on shaft II. Handle 82 carries a spring pressed dog 98 for engagement with a ratchet I formed along one edge of a plate Ifll fixed to the frame of the machine. As the ring rail progresses upwardly during its traversing movement, ring rail holders II slide upon guide posts 93. When the bobbin is approximately one-half built the ring rail holders will reach the underside of thread guide brackets 02, which are also mounted on guide 8 posts If, and lift the entire thread guide assembly. Thereafter, the thread guide brackets will ride upon the tops of the ring rail holders giving the thread guides a movement similar to that of the ring rail. The point at which the ring rail holders first contact the thread guide assembly may be varied by the operator by changing the setting of handle 88 with respect to the ratchet Hill. It will be noted that the movement of the thread guide assembly in unison with the ring rail can be accomplished without movement of the handle 98 due to the free mounting of the handle on shaft 85. If the operator so desires, he may lift the handle a notch or two ahead of the movement of the ringv rail to prevent the oscillatory movement of the thread guide assembly. It will be obvious that upward movement of control handle 88 will lift arm 98 and so impart rotation to shaft 95 and lifting movement to the thread guides.

As is well understood in the spinning art, the rolls of the draft section must be in continuous motion during the spinning operation. The lifting of the draft section during the latter half of the bobbin building necessitates novel drive mechanism from the main drive of the machine to the upwardly moving draft section.

The drive from a suitable source of power, passes into a transmission I03 through shaft I, and is taken ofl from shaft I05. A chain drive I" passes over sprocket It! on shaft I08, and a sprocket I08 fixed to a shaft I09. Shaft Iii! also carries gear II, which is in mesh with a gear III. Concentric with, and fixed to rotate with, gear III is a smaller gear II 2 in mesh with gear Ill on a shaft Ill which is carried by the machine frame. Gear I I3, through the intermediary of a gear III, drives a gear III! which is carried by, and provides the drive for the draft section. Two pairs of movable link members Ill and II. are provided to support gear IIS and control its movement. Links II! have one end iournaled upon shaft III and their opposite ends journaled upon shaft H9 which carries movable gear 5. Links II! have one end journaled upon shaft I20 which carries gear H6, and their opposite ends are also journaled upon shaft I I8. This arrangement permits gear I It to move away from and approach gear Ill, gear IIB, under the control of links I" and lit moving inwardly and outwardly between gears H3 and H6 while remaining constantly in mesh with both. The above described mechanism will provide a constant drive for the draft section and permit the draft section to be raised and lowered during the various operations of spinning and dofling.

Shaft I20 is the main drive shaft for the draft section, and connects through clutch I2I to the draft, or highest speed roller I22. The other live i rollers I24, I26, I26, I21, I28 of the six roll draft the top to I28 at the bottom rotate at progressively increasing speeds. The speed diflerential between these rollers, however, is not as great as that between roller I2! and draft roller I22.

Most of the drawing action takes place between rollers I22 and I28.

The draft section comprises six rollers, as described, in contradistinction to the usual five roller system. Through the use of six rollers the maximum draft possible Is raised from the 9-1 of the conventional five-roll system, to -1 or more.

During the draft, short fibers, that is, fibers of less length than the distance between control points on adjacent rollers, are not under control of the rollers and have a tendency to pull through in bunches. The greater the draft, the more tendency there is to bunch and create uneven thread.

This tendency is greatest as roving approaches the draft roller, but may take place at any point in the control roller system.

The present invention solves the problem of short fiber control by substituting two rollers in the space usually occupied by the third roller of the conventional five roller system. In other words, rollers I28 and I21 replacethe single roller which usually occupies the space between rollers I25 and I28. It will be obvious that the substitution of two rollers for the one formerly used reduces the distance between control points in this area to a fraction of its former length. As this area is the next most critical to the region between the first control roller and the draft roller, vastly better fiber control is obtained, and much higher drafts may be employed without impairing the quality of the spun yarn.

The provision of a six roller draft system solves the problem of higher drafts in a simple manner, the mechanism requiring little or no attention, and being readily accessible for cleaning and repairs. Higher drafts will permit a great reduction in the number of weights of roving necessary to produce various weights of yarn and thus simplifying the spinning process.

The drawing action of draft roller I22 is accomplished only with considerable friction between the roving and roller, which causes fibers and lint from the roving to adhere to the draft roller. These fibers if not cleaned off the roller will collect, hampering the action of the roller, and at times attach themselves to the roving to cause a lump or enlargement on the yarn. Many varied attempts have been made to clear the roller with various degrees of success.

The present invention provides an undercleaning plush-covered roller I rotating against the face of draft roller I22, and a pair of felt wiping strips III and I32, strip I32 acting upon roller I28 and strip I3I upon draft roller I22. Roller I30 and strips I3I, I32, are mounted in an elongated metal tray or housing I33, which is connected to levers I34, pivoted to the draft section frame, as at weighted arms I35. Housing I33 is provided with slots-I31 in its end walls to receive the trunnions of roller I30, and has its side walls turned back to provide substantially U-shaped recesses I38 to receive felt strips I3I and I32. The weight of the overhanging arms I36 causes lever I34 to swing about its pivot I35, rocking housing I33 toward the draft rollers and bringing roller I30 and strips I3I and I32 into firm contact with draft roller I22 and roller I28, to effectively remove fibers and lint from the rollers. Arm I36 can be lifted upward from time to time, moving the housing from the draft rollers so that roller I30 may be removed for cleaning and the felt strips may be wiped oil.

Below the draft shaft I22, is mounted a pair of rollers I39 and I40, the roller I40 being of I35, and having overhanging channels for the roving as it leaves the draft rolls. Confining the roving in the grooves I4I cuts down substantially on the false ballooning between the draft shaft and the thread guide,

and alsoserves to prevent the joining or marriage of two adjacent yarns in the event of breakage of one of the yarns. It has been found advantageous to cover the sections of roller I40 intermediate the grooves with plush.

Referring again to the driving mechanism, and particularly the transmission I03, it has been pointed out that, the transmission has an input shaft I04, and an output shaft I05 which furnishes the power to drive the draft section, as shown in Figures '7 and 8. In fact, all of the moving parts of the machine, with the exception of the spindles, receive their power from shaft I05. Transmission I03 has a second output shaft I42 to which the spindle drive drum I4 is directly connected. This shaft supplies power to the spindles only. Spindle drive belt I3 is preferably of well known type, a single belt driving several spindles. Transmission I03 is provided with a reversing gear I43 which may be shifted to reverse the rotation of the spindle drum shaft, and thereby reverse the direction of rotation of the spindles. Thus, the winding of the bobbins and the twisting of the thread may be reversed by the simple shifting of a gear without the necessity of replacing gears with others or adding additional gears to th driving mechanism. This is an important safety item, as serious breakage can occur if draft shafts are run backwards, for the Joints between shaft sections will unscrew.

Although the operation of the machine has been given in connection with the description of the structure, a restatement of the operation in its entirety will aid in understanding the invention. When spinning is begun, ring rail I0, thread guide I, balloon arrester 82 and draft section 3 are all at their lowest positions. As the spinning begins, the ring rail begins its traversing movement, the balloon arrester moving with the ring rail. As previously pointed out, horizontal bar 24 reciprocates, and gradually moves to the right, as viewed in Figures 4 and 5, as the ring rail traverses. When the bobbin is built to a predetermined point, dog 52 on horizontal bar 5| will strike micro-switch 54 starting motor 43 to lift shaft section 3. As the draft section lifts, control rod 5| will be moved to the left causing micro-switch 55 to pass under dog 53 on horizontal bar 24 and break the circuit to the motor. This cycle is repeated during the remainder of the bobbin building. At approximately the same time as the draft section begins to rise, ring rail holders II will have reached thread guide brackets 92 and the thread guide assembly will begin to move in unison with the ring rail. When draft rail reaches its maximum height, arm II actuates limit switch to break the circuit controlling motor 43. The ring rail is returned to its lower position in the usual manner which also returns the thread guide and balloon arrester to their respective starting positions. Pressing switch I4 will energize motor 43 causing it to run in reverse direction running down jacks I! to lower the draft section. As the draft section reaches its lowest position, arm II will actuate limit switch I6 stopping the motor. It will be noted that movement of the draft section up or down will cause arm II to leave the respective switches 18 and 55, immediately restoring the respective control circuits for subsequent use.

It is believed that the operation of the other 11 mechanisms is sumciently clear from the foregoing description.

While there has been disclosed herein what is believed to be a preferred and practical embodiment of the invention, it is to be understood that the principles of the invention can be carried out in many different ways, and by different means, within the scope of the appended claims.

What is claimed is:

1. In a spinning machine, a frame, spindles on said frame, traversing ring for each spindle, means to impart spindle traversing movement to said rings, a draft section above said spindles connected to said frame for vertical movement, and means controlled by said ring operating means to move said draft section vertically during a predetermined portion of the traversing movement of said rings.

2. In a spinning machine, a frame, bobbin building mechanism, a draft section movably connected to said frame, jacks connected to said frame and said draft section, means to operate said jacks, said jack operating means controlled by said bobbin building mechanism to move said draft section vertically during a predetermined portion of the bobbin building operation.

3. In a spinning machine, a frame, bobbin building mechanism including a traversing ring rail, an axially movable horizontal bar to impart traversing movement to said ring rail, and means to operate said horizontal bar, a draft section connected to said frame for vertical movement, Jacks connected to said frame and said draft section, means to operate said Jacks, a control rod adjacent said horizontal bar, and cooperating means on said control rod and horizontal bar to control the operation of said Jack operating means to lift said draft section during the building of the bobbin.

4. In a spinning machine, a frame, bobbin building mechanism, a movable draft section, lacks connected to said frame and said draft section for moving said draft section vertically, and means connecting said draft section to said frame to maintain the vertical alignment of said draft section during the vertical movement.

5. In a spinning machine, a frame, bobbin building mechanism, a movable draft section, lacks between said frame and said draft section for moving said draft section vertically, means to operate said jacks, and means to control said jack operating means, said control means operated by and in synchronism with said bobbin' building mechanism.

6. In a spinning machine, a frame, a draft section including a draft shaft connected to said frame for vertical movement, means for moving said draft section vertically. a source of power for said draft shaft, a gear mounted on a shaft fixed to said frame and rotated from said source of power, a gear on said draft shaft, an inter- 12 mediate gear in mesh with both said other gears, and means to maintain said intermediate gear in mesh with said other gears as said draft section moves vertically.

7. In a spinning machine, a frame, a draft section including a draft shaft connected to said frame for verti al movement, means for moving said draft section vertically, a source of power for said draft section, a gear mounted on a shaft fixed to said frame and rotated from said source of power, a gear on said draft shaft, a link having one end freely mounted on said shaft fixed to the frame, a second link having one end freely mounted on said draft shaft, the opposite ends of said links freely Journaied on a common shaft, and a gear on said common shaft in mesh with said other two gears.

8. In a. spirming machine having a plurality of spindles, spindle traversing mechanism and a draft section, in combination, a gear transmission having an input shaft and a pair of output shafts, one of said output shafts being operatively connected to drive said spindles, the other said output shaft being connected to drive said'spindle traversing mechanism and said draft section, and means for reversing the direction of rotation of said spindle driving output shaft.

C. HERBERT HARRIGAN. WILLIAM W. WETZOLD. GILBERT F. NOROROSS. JOHN C. VAN RIPER.

REFERENCES CITED The following references are of record in the file of this patent:

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